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Explore the Effects of Change on the Structure of Food Chains

In this activity, students will be challenged to stretch their understanding of food chains. The terms producer, consumer and predator and so on are expected to be understood and the worksheet explores the effects of ecological changes on the structure of food chains as well as food webs.

'Explore the Effects of Change on the Structure of Food Chains ' worksheet

Key stage:  KS 2

Year:  Year 4 Science worksheets

Curriculum topic:   Animals, including Humans

Curriculum subtopic:   Food Chains

Popular topics:   Biology old worksheets, Healthy Living And Diet worksheets

Difficulty level:  

Worksheet Overview

Food chains show how food energy flows through an ecosystem. The arrows in a food chain show the direction of energy, for example:
















...shows that the energy produced by the leaves (using sunlight, water and air) is transferred to the consumers as they eat each other. The top predator is the hawk.


In the following questions, think about where organisms feed within the food chain and what would happen to the chain if they were taken out, say by disease.


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